Morphological changes in thymus, spleen, and liver of laying hens after the application of biologically active additive " Vigoton "

Morphological changes in the thymus, spleen and liver of laying hens after application of the vitamin-amino acid supplement "Vigoton» have been studied. Studies have found tha t the inclusion of vitamin-amino acid feed additive "Vigoton" in the diet of broiler hens at a dose of 1.5 ml per 1 liter of drinking water for 5 days running (at the beginning of egg-laying, at the peak of egg-laying and once a month up to the end of egg-laying) has a positive effect on the morphological changes in the thymus, spleen and liver. This is manifested in the presence of more pronounced protective and adaptive changes, characterized by the absence or less pronounced lymphoid and inflammatory infiltration, which is present in intact birds in the control.